Poinsettia

Staying with Mum for a few days so only managed to upload this today (28th). My Mum loves these plants and buys one every year in the hope it will make it to Christmas - any top tips for keeping them?
Had an excellent day getting Mum's Christmas shopping sorted in The White Rose shopping centre in Leeds, also managed a nice lunch and afternoon tea.  Just the wrapping needed now. Then I can start thinking about my shopping!